Buffer device for gangue at bottom of feeding well

Abstract

The utility model discloses a feeding well bottom gangue buffer device and belongs to the technical field of mine backfill mining. The buffer device comprises an outer ring, an inner ring, a bottom plate, a protective cover, a spring damper and a base. A spring damper is connected between the bottom plate and the base; a protective cover is connected to the bottom plate and surrounds the periphery between the bottom plate and the base, and it is guaranteed that blocky gangue cannot enter the spring dampers. An outer ring and an inner ring are connected to the bottom plate, and the inner ring is located in the outer ring. The device has the advantages of being simple and practical in structure, low in cost, convenient to install and capable of guaranteeing smooth production. When gangue thrown from the ground through a feeding well reaches the bottom, the ending speed is high, great impact force can be generated on gangue storage facilities, and equipment and an underground gangue bin are prone to being damaged. The damper of the device can reduce the impact effect of falling gangue on a storage facility by absorbing energy and applying resistance, in addition, the gangue stored in the device can be prevented from directly hitting the device, abrasion is reduced, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mine backfilling mining technical field, especially a gangue buffer device at the bottom of feeding well, which is used in the occasion of throwing large gangue blocks into the underground through the feeding well. BACKGROUND

[0002] Ground coal gangue backfilling into a well is an effective comprehensive utilization mode of coal gangue, aiming to reduce the pollution of coal gangue to the environment and improve the recovery rate of coal resources. There are various ways of gangue backfilling into a well, one of which is to transport the blocky gangue on the ground to the underground through the feeding well, crush it, and then backfill it into the roadway; or process it into qualified gangue paste after crushing together with mine powder, cementing material, water and other materials, and then transport the gangue paste to the underground goaf through the pipeline for filling.

[0003] The feeding well is a facility for directly feeding bulk materials (pebbles, river sand, mixed materials, etc.) from the ground to the underground in underground mining operations such as coal mines. The bulk materials are directly fed from the ground to the underground through a vertical pipe hole, thereby greatly shortening the auxiliary transportation distance in the underground, saving transportation costs, and ensuring the safe, intensive and efficient production of the mine. In general, the feeding well, as an efficient and economical bulk material transportation method, has a wide application prospect and important popularization value in underground mining operations such as coal mines.

[0004] When using the feeding well to transport large gangue blocks, the speed of the gangue in the pipeline is always increasing, and when the gravity and air resistance reach a balance, the speed no longer increases, approaching a uniform linear motion. According to the estimation of the particle size and shape of the gangue, the terminal speed at this time is about 60-80 m / s. The gangue blocks falling at such a high speed will cause the following problems:

[0005] 1. The ordinary material receiving device will be deformed and quickly worn out by the high-speed falling blocky gangue;

[0006] 2. The contact time of the gangue blocks colliding with each other is extremely short, and part of the gangue will be crushed and produce dust, affecting the surrounding environment;

[0007] 3. It is easy to cause great impact damage to the silo. Utility model content

[0008] The utility model aims to provide a gangue buffer device at the bottom of the feeding well, which can reduce equipment wear and tear, increase equipment service life, and reduce impact damage to the silo.

[0009] The utility model discloses a buffering device for coal gangue warehouse, which comprises an outer ring, an inner ring, a bottom plate, a shield, a spring damper and a base.

[0010] The outer ring is bowl-shaped with a large upper opening and a small lower opening, and a rib plate is connected to the outer ring.

[0011] The inner ring is bowl-shaped with a small upper end and a large lower end, and the upper end is closed.

[0012] The shield is composed of multiple arcs, and at least two arcs are provided.

[0013] The spring damper comprises a fixing bolt, an upper cover, an adjusting nut, a rubber sleeve, a damper base, a spring anti-skid pad, a limiting bolt, a spring and a rubber anti-skid pad.

[0014] The buffering device is bowl-shaped, and part of the coal gangue is stored in the device.

[0015] The bowl-shaped structure can store coal gangue, and the coal gangue can collide with each other, thereby reducing the impact and the abrasion of the equipment.

[0016] The device is provided with an outer ring and an inner ring, the bottom of the outer ring is provided with holes according to the size of the gangue particles, when the gangue is impacted, the gangue with a particle size smaller than the size of the holes is squeezed out, and the impact can be effectively reduced due to the relative movement of the gangues.

[0017] In order to reduce the impact on the top platform of the bin, a spring damper is installed at the bottom of the device, and different specifications and quantities of dampers can be used according to the size of the gangue particles and the delivery amount per hour.

[0018] When the large gangue is directly thrown from the ground to the underground through the feeding well, the fast-falling stones will impact the gangue remaining in the buffer device, avoiding the direct impact of the stones on the steel plate and reducing the wear of the device. In addition, the loose stones at the top will move relatively in the moment of the impact of the stones, reducing the impact force, and when the accumulated stones reach a certain height, they will fall into the bin from the holes around. According to the size of the gangue particles, a circle of holes is opened at the bottom of the outer ring of the device, and the small particle size gangue impacted and broken will be squeezed out through the holes, ensuring that the stones can move relatively to reduce the impact.

[0019] Although the impact can be reduced by impacting the gangue with the gangue, the bin will still be impacted. In order to further reduce the impact, a circle of spring dampers is installed between the bottom plate and the base of the device, and the number and carrying capacity of the spring dampers are determined according to the size of the gangue particles and the delivery amount per hour, so as to achieve the effect of minimizing the impact.

[0020] Two shroud parts are fixed on the bottom plate of the device to prevent stones from entering the spring damper and affecting the use effect.

[0021] The device is fixed by bolts on the bottom plate and H steel base on the bin, which is convenient for replacement and maintenance.

[0022] Since the device is used at the bottom of the feeding well, the impact and damage of the stones to the bin are reduced. The wear is reduced by impacting the stones with the stones, and the service life of the device is increased.

[0023] The buffer device is added at the bottom of the feeding well, which allows the blocky gangue to impact each other, reduces the wear of the equipment, and reduces the impact and damage to the bin through the damping effect of the spring damper. The structure is simple and practical, the service life is long, the maintenance is convenient, the bin is maximally protected, and the purpose of the utility model is achieved.

[0024] Advantages: the structure is simple and practical, low in cost, convenient to install, and guarantees the smooth production. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a three-dimensional state structure schematic diagram of the buffer device.

[0026] Figure 2 is a working state structure reference schematic diagram of the buffer device.

[0027] Figure 3 is an outer ring structure schematic diagram in the buffer device.

[0028] Figure 4 is a top view structure schematic diagram of Figure 3 .

[0029] Figure 5 is a shield structure schematic diagram of the utility model.

[0030] Figure 6 is a spring damper structure schematic diagram in the buffer device.

[0031] Figure 7 is a structure state schematic diagram of the utility model in use place.

[0032] Figure 8 is a top view structure schematic diagram of Figure 7 .

[0033] In the drawing, 1, the feeding well pipeline; 2, buffer device; 3, H steel base; 4, silo; 5, outer ring; 6, inner ring; 7, rib plate; 8, bottom plate; 9, shield; 10, spring damper; 11 base.

[0034] 10-1, fixed bolt; 10-2, upper cover; 10-3, adjusting nut; 10-4, rubber sleeve; 10-5, shock absorber base; 10-6, spring non-slip pad; 10-7, limiting bolt; 10-8, spring; 10-9, rubber non-slip pad. DETAILED DESCRIPTION

[0035] Example 1: The buffer device includes: an outer ring 5, an inner ring 6, a base plate 8, a protective cover 9, a spring damper 10, and a base 11; the spring damper 10 is connected between the base plate 8 and the base 11; the protective cover 9 is connected to the base plate 8, and the protective cover 9 surrounds the periphery between the base plate 8 and the base 11 to ensure that blocky gangue cannot enter the spring damper 10; the outer ring 5 and the inner ring 6 are connected to the base plate 8, and the inner ring 6 is located inside the outer ring 5.

[0036] The outer ring 5 has a large upper opening and a small lower opening, resembling an open bowl shape, and is connected to a reinforcing plate 7 on the outside of the outer ring; there is a discharge port on the lower wall of the outer ring 5.

[0037] The inner ring 6 is smaller at the top and larger at the bottom. The top is a closed structure, like an inverted bowl, while the bottom is connected to the base plate.

[0038] The protective cover 9 is composed of multiple arcs, with at least two arcs; the multiple arcs are spliced ​​together to form a cylindrical shape, and each arc has a flange at its upper end for connection with the base plate 8. In this embodiment, two semi-circular arcs are used.

[0039] The spring dampers 10 are at least three in number, with the same structure, and are evenly distributed between the base plate 8 and the base 11. They include: fixing bolt 10-1, top cover 10-2, adjusting nut 10-3, rubber sleeve 10-4, shock absorber base 10-5, spring anti-slip pad 10-6, limit bolt 10-7, spring 10-8 and rubber anti-slip pad 10-9.

[0040] A rubber anti-slip pad 10-9 is attached to the bottom surface of the shock absorber base 10-5, and a spring anti-slip pad 10-6 is attached to the upper surface of the shock absorber base 10-5. Two channel steels are vertically connected to the shock absorber base 10-5 outside the spring anti-slip pad 10-6, and limit bolts 10-7 are attached to each of the two channel steels. A top cover 10-2 is connected between the two channel steels, and the top cover 10-2 has elongated through holes on both sides; the elongated through holes are embedded in the limit bolts 10-9. -7 is the limiting bolt 10-7 limiting slide; a fixing bolt 10-1 is connected to the upper end of the upper cover 10-2, and a rubber sleeve 10-4 is connected to the lower part of the fixing bolt 10-1 through the adjusting nut 10-3; a spring 10-8 is connected between the rubber sleeve 10-4 and the spring anti-slip pad 10-6; adjusting the adjusting nut 10-3 can adjust the up and down movement of the rubber sleeve 10-4 on the fixing bolt 10-1, that is, adjust the tension of the spring 10-8.

[0041] Example 2: In Figure 7 and Figure 8 The present invention relates to the application of a buffer device in a feeding well, which is used in underground mining operations such as coal mines. It includes: a feeding well pipeline 1, an H-steel base 3, and a silo 4; and also includes the buffer device 2 of the present invention.

[0042] The buffer device 2 is installed on the stock bin 4 through the H steel base 3, and the inlet of the buffer device 2 is connected with the outlet of the feeding well pipeline 1.

[0043] The buffer device is added at the bottom of the feeding well, which can reduce the equipment wear and increase the service life, and can also reduce the impact damage to the stock bin.

Claims

1. A bottom gangue buffer device for a feeding well, characterized in that: The buffer device comprises an outer ring, an inner ring, a bottom plate, a shield, a spring damper and a base; the spring damper is connected between the bottom plate and the base; the shield is connected to the bottom plate and surrounds the periphery between the bottom plate and the base, so that the blocky gangue cannot enter the spring damper; the outer ring and the inner ring are connected to the bottom plate, and the inner ring is located in the outer ring.

2. The gangue buffer device at the bottom of the feeding shaft according to claim 1, characterized in that: The outer ring has a large upper opening and a small lower opening, and a rib plate is connected to the outer ring; the lower wall of the outer ring has a discharge opening.

3. The gangue buffer device at the bottom of the feeding shaft according to claim 1, characterized in that: The inner ring has a small upper end and a large lower end, the upper end is a closed structure, and the lower end is connected to the bottom plate.

4. The gangue buffer device at the bottom of the feeding shaft according to claim 1, characterized in that: The shield is composed of multiple arcs, at least two arcs; the multiple arcs are spliced to form a cylindrical shape, and each arc has a flange at the upper end, which is used to connect to the bottom plate.

5. The gangue buffer device at the bottom of the feeding shaft according to claim 1, characterized in that: The spring damper comprises at least three identical structures and is uniformly distributed between the bottom plate and the base, and comprises a fixing bolt, an upper cover, an adjusting nut, a rubber sleeve, a damper base, a spring anti-skid pad, a limiting bolt, a spring and a rubber anti-skid pad; the rubber anti-skid pad is connected to the bottom surface of the damper base, the spring anti-skid pad is connected to the upper surface of the damper base, two channel steels are vertically connected to the damper base outside the spring anti-skid pad, the limiting bolts are connected to the two channel steels, the upper cover is connected between the two channel steels, the two sides of the upper cover have long strip-shaped through holes; the long strip-shaped through holes are embedded in the limiting bolt as a limiting sliding channel; the fixing bolt is connected to the upper end of the upper cover, the lower part of the fixing bolt is connected to the rubber sleeve through the adjusting nut; the spring is connected between the rubber sleeve and the spring anti-skid pad; adjusting the adjusting nut can adjust the up-and-down movement of the rubber sleeve on the fixing bolt, that is, adjust the tightness of the spring.

Images